WASHINGTON, March 4, 2013 /PRNewswire-USNewswire/ -- As debate continues over approaches to best measure teacher effectiveness based in part on student test scores, ETS's 14th Angoff Memorial Lecture will address this topic. The event will be held on March 22 at the National Press Club, 529 14th St. NW, 13th Floor, from 2–3:30 p.m.

The lecture is expected to draw hundreds of educators, policymakers, legislators and researchers, and features Edward H. Haertel, Jacks Family Professor of Education, Emeritus, at Stanford University. Haertel has conducted research on value-added estimates calculated from patterns of students' test scores over time using complex statistical models.

"These models provide scores for teachers intended to tell how well each did in raising students' achievement — but they also raise questions," says Haertel. "Specifically, we need to determine the reliability and validity of teacher value-added scores; whether they measure what they purport to measure and are free from bias and distortion; and how strongly they relate to other indicators reflecting broader notions of teacher quality or effectiveness."

A reception will be held immediately following the lecture.

About the William H. Angoff Memorial Lecture Series The William H. Angoff Memorial Lecture Series was created in 1994 to honor the life and work of William Angoff. For more than 50 years, Angoff made major contributions to the fields of educational and psychological measurement. Aligned with his interests, this lecture series is devoted to relatively nontechnical discussions of important public interest issues related to educational measurement.

About ETS At ETS, we advance quality and equity in education for people worldwide by creating assessments based on rigorous research. ETS serves individuals, educational institutions and government agencies by providing customized solutions for teacher certification, English language learning, and elementary, secondary and post-secondary education, as well as conducting education research, analysis and policy studies. Founded as a nonprofit in 1947, ETS develops, administers and scores more than 50 million tests annually — including the TOEFL® and TOEIC® tests, the GRE® tests and The Praxis Series™ assessments — in more than 180 countries, at over 9,000 locations worldwide. www.ets.org.